linux-phytec-fsl

MLK-14283: dts: fix DE polarity for lcdif

For imx7d, the DTS definition (imx7d-sdb.dts) is used by default, and this
is the one used when plugging a HDMI device. Since HDMI works with DE
polarity as active high, but the MIPI DSI works with active low, this
patch sets the DE polarity to active high in imx7-sdb.dts and moves the
active low polarity to imx7d-sdb-mipi-dsi.dts.

Signed-off-by: Robert Chiras <robert.chiras@nxp.com>